gh-145392: Fix _pyrepl completion to replace input stem instead of appending
#240791
| Job | Run time |
|---|---|
| 4s | |
| 4s | |
| 8s |
_pyrepl completion to replace input stem instead of appending
#240791
| Job | Run time |
|---|---|
| 4s | |
| 4s | |
| 8s |